A-share market assessment | The Shuangchuang Index remained strong throughout the day, with the Sci-Tech Innovation 50 Index hitting a new high of 2200 points. Hard technology companies saw a full-scale breakout.

On June 30th, the three major indexes of A-shares collectively closed higher for the day. By the closing bell, the Shanghai Composite Index was up 0.50%, the Shenzhen Component Index was up 2.48%, and the ChiNext Index was up 2.99%. In addition, the Sci-Tech 50 Index was up 3.85%, and the BSE 50 Index was up 2.10%. Most individual stocks in the market rose, with over 3000 stocks trading up. The total trading volume in Shanghai, Beijing, and Shenzhen was 3.27 trillion yuan for the day, a decrease of 263 billion yuan from the previous day. Domestic main capital had a net inflow of 41.05 billion yuan; the market median change was 0.49%. On the market front, main capital once again embraced tech stocks, with the semiconductor industry chain continuing to surge. Several stocks such as Leaguer (Shenzhen)Microelectronics Corp., GalaxyCore Inc., MEMSensing Microsystems (Suzhou, China) Co., Ltd., and others hit the daily limit up. CPO concept stocks experienced a volatile rise, with Suzhou Everbright Photonics 20cm hitting the limit up. The Siasun Robot & Automation concept continued to rebound, with stocks like Jinhua Chunguang Technology, Zhejiang Fenglong Electric, and others hitting the limit up. The lithium mining concept also saw a rebound, with stocks like Sinomine Resource Group hitting the limit up. On the downside, traditional sectors like medicine experienced a heavy blow, while agriculture and consumer goods concepts saw a decline. The chemical industry sector collectively trended downwards, as did the large financial sector. In terms of focus stocks, the "AI chip leader" Cambricon rose over 7%, reaching a historical high with a market value exceeding one trillion yuan by the closing bell. Looking ahead at the performance of the optoelectronic module industry in the second quarter, a GF SEC research report stated that the demand continued to be strong, and the performance of leading companies in the optoelectronic module industry and core upstream companies is expected to steadily increase from the previous quarter. A Haitong research report stated that the demand for AI computing power continued to surge, and the optoelectronic communication industry chain is expected to accelerate its growth. Looking at the industry trend, top global tech and cloud companies are rapidly expanding into the core areas of optoelectronic communication. Nvidia's investments in companies like LITE, Coherent, and Corning demonstrate the strategic value placed on high-speed optical interconnection, optical components, and advanced materials by leading AI chip companies. According to China Securities, as the AI style in the global market transitions from hardware to cloud companies, the AI computing market in China is experiencing a big boom. Beijing Topnew Info & Tech and Unisplendour Corporation hit the limit up in early trading, and the Dawning Information Industry also saw a significant rebound. The CPO sector, which has been highly volatile recently, also saw a notable rebound today. It seems that this style shift may be limited to the AI sector. Looking ahead, Tianfu Securities believes that internal differentiation in the tech sector is still ongoing, with a focus on the relative strength of the Shuangchuang Index. If the Shuangchuang Index weakens and the tech innovation index remains relatively strong, caution should be exercised for the potential risks of loosening in team-style stocks. A-shares are relatively independent in their trend, and in the backdrop of tech differentiation, funds are trying to switch between high and low positions. However, the sustainability of this trend shift still needs further confirmation. Popular sectors: 1. The semiconductor industry chain continued to surge, with many stocks hitting the limit up. 2. The CPO concept experienced a volatile rise, with stocks like Suzhou Everbright Photonics 20cm hitting the limit up. 3. The Siasun Robot & Automation concept continued to rebound, with many stocks hitting the limit up. 4. The lithium mining concept saw a rebound, with several stocks hitting the limit up. Institutional viewpoints: - Tianfu Securities: Caution should be exercised for potential risks of loosening in team-style stocks as tech differentiation continues. - Caixin Securities: Market is transitioning from liquidity-driven to performance-driven, with a focus on balancing demand at the end of the quarter. - CITIC SEC: This round of AI trading is more like the electric new cycle than the internet bubble. - China Securities Co., Ltd.: The global semiconductor equipment cycle continues to be confirmed, with a focus on price increases and overseas markets. This article was originally published on "Tencent Stock Selection" and edited by Chen Siyu for GMTEight.